Linear vs logarithmic scales. 1  Human hearing is better measured on a logarithmic scale than a linear scale. 2  On a linear scale, a change between two values is perceived on the basis of the difference between the values.  On a logarithmic scale, a change between two values is perceived on the basis of the ratio of the two values.
Antimony has been known since ancient times. It is sometimes found free in nature, but is usually obtained from the ores stibnite (Sb 2 S 3) and valentinite (Sb 2 O 3). Nicolas Lemery, lÃ©mery A french, chemist was the first person to scientifically study antimony and its. compounds
Sodium is a highly reactive soft greyish metal in its pure form, which is never found in nature because of said reactivity. Anyhow, to task: sodium has eleven (11) electrons, in a 2-8â1 configuration, with that one lonely valence electron in the outermost orbital/shell, accounting for the high degree of reactivity. In the nucleus are eleven (11) protons and twelve (12) neutrons. The only stable isotope of sodium is 24Na, which can only be formed thru nucleosynthesis at temperatures approaching 600 megakelvins.